Defining Force Worksheet - Mrs. Ellis' Science Class!
Name Period Date
Defining Force & Newton’s First Law
Examine the forces acting on the freezer in the diagram and answer questions 1 – 3.
1. Are there any balanced forces acting on the freezer?
If so, what are they?
2. Is there a net force acting on the freezer? If so, label it on the diagram. Then, describe which forces interact and how they interact to produce the net force. (Assume Fpush is larger than Ffriction)
3. Describe the motion of the freezer. Will its velocity change? If yes, how?
4. Which object has more inertia – a bowling ball or a tennis ball? Explain.
5. How does inertia influence your ability to roll a bowling ball versus a tennis ball? Explain.
6. Write Newton’s First Law of Motion in your own words. You MAY NOT use the following words: at rest, motion, constant velocity, net force.
7. Use Newton’s First Law of Motion and the concept of inertia to explain what happens to a person in a head-on car accident who is not wearing a seat belt. How does wearing a seat belt help?
-----------------------
N
Ffriction
W
Fpush
................
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